1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a01c6fd4f2ce8e342671ed21921aa4496f5db71c6c639f78914c10c80fd01. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1fc7626-d55e-4c98-a3c7-b92bd07b2fd5.json and https://artists.proofprofile.net/proofs/artist/e1fc7626-d55e-4c98-a3c7-b92bd07b2fd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7eb82c1c7c96c853caa044eef05c5d34ee49b10d863cbaf223a3527b8f19f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032fc81e097ceac2a04b484a09f0c235f646585a0bb55aebe3c49972d2376b6a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d35f9b60f1e9c03478814ae7d0ad08e58152934e780d77c2c3efae65fb926b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864c61c11dad90a73f62366f8290099b19405cb69dbe6039179a85c508f40ead. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe266540b4a34ca50af0df5b01511bbf9065d77d09b846a5c65c8362a771758e0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1100629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96772302b9694dde952bbe618bc416fe614378dbdc68f198ce81b094e8f8032b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1100630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ec891cef9d3903c00982937f702946537e6b3110a4afb719ef095ac63738c4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821dea856fd316d204e15dd6a91ccdf4faf4fb73619e9c1bed609df9f529b79e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008c05cc48961d656ae341976c98097390c39243b038d13a80b0894ea27536e4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70df558d863276304c980fc105dac2bd3dab7603ded808b5bd2f94c31eaf0b90. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26f3b23bc291f3ee0fceb87131663dd9aa0128b9ce46dae4f7a011672b7ab87. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FI2KR1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc59e906a31b0740e7af746e226b468de4f8be9900d09a15bb9f8616306633. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FI2KR1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e33b1e2185c61ba7ba53da0a7a3c8b3ab27666a030acc90831807d77b7ea0e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801944d813efe203b5031aabab28f0d47350fdad9e0760d45489eeb7675ffe81. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71601061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34eca392e884d6444b2df7d00e3dd8e6fb0be8bf073b2ac24f9c0a42cf513e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71601064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d605b27a449ab9839c1a1c65fdf5fa4dc55992853430dd1c46fdc69019fad9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:54:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71700428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2e2cd36b9a7c68f9c5da1eef6a9ecb76cac30490069079fcd878ef5fe7a14. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1100631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c321ceaae2916a6a9c5c1562b8072b7fb90e792a4cff47504f1b62b613061ed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:00:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4279145114575d7c9d2b5e96e1d3d675786e853bceee4a6e37fa9065b91d7e6d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d623930ffa9130fada95d00c24be099a5e7aeecc3f2928bcfb62c958c1584c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e499f69f7a45ea84d449611f33ce63c05f4bed645619c980e72a29f66f753b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71900433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c32990c834c99604a0d9087fe266dff9a5e2ccb3f2eb3702268ddb1946d14. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM72000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1748b2957d741cf07711b06d30595720628ed387c96eddc25e0e95845a6e33. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM72000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58218342057f3ddf00bc7215a8f67cd711e735d41133435fac8505d397da491. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:05:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM72000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0da2ed3ba1fd0abd1430120e1de4aae162dec84f6a0d22221f61bf3b33b102. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM72000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a48de527096a07062cab27f332b1db6ff9c37a7091eac75f5d22d258a3a743. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3749d2cd58a1ad0aec27e19b98b34503ec4460b05a196abcfcaa38ff85bb2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA1100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4743e7169cfbcc0ddabb484874f0d13c423d79dc777a0bc84497abc3f8567a49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIUM71700397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d9180b4a7b6d87eb7e8dc5dcf1df666a402c65eb13f4242c416b42800f5981. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA0900429.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1883190829ee11090cbfad46ed9008e1bf8e9f7db7fef64ffc7e0b13c2cd6291. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIWMA0900428.